Here's the deal: this place can do it right, depending on your expectations. The food is average at best, but the price is great at worst.
For instance, get the vegetarian dinner special. It's a big plate with a bunch of stuff for not much money. Simply put.
It'll fill you up, you'll be able to satisfy that hankering for savory Indian food, and it won't hurt the wallet.
If you want to relish the complexity of this beautiful cuisine, Gau isn't the place for you. But if you just want a quick fill up with some Indian character, it does the trick.